Dean's fingers clamp down hard on Sam's hips to stop him pushing himself back onto Dean's cock. Sam groans.

"Dean - please!"

Dean laughs.

"Sammy, Sammy, Sammy. I never would have taken you for such a cock-hungry little bitch, but, I gotta say, it's a good look on you."

"Dammit, Dean! Move already!"

A second attempt by Sam to force a deeper penetration is thwarted, and then punished by a sharp slap to his ass. His internal muscles react, clenching tight, dragging a heartfelt groan from his evil-minded brother. So he does it again.

"Oh, man, you really are a greedy little slut. Twice last night and then again this morning and now here we are - it's barely noon and you are begging for it."

Dean eases back until the only points of contact between his body and Sam's are his hands on Sam's hips and the very tip of his cock.

Sam whines in frustration and moves to transfer his weight to his left elbow, freeing up a hand to palm his cock. He barely gets in one full stroke before Dean is there, dragging his hand back up to beside his head and pinning it roughly to the mattress.

"Fuck!"

"Nuhuh. Not yet, Sammy boy. For that, you get to wait some more."

Ignoring Sam's pleas and entreaties - and a not inconsiderable smatter of curses and highly inventive obscenities - Dean restarts the long, slow strokes that had already brought Sam so close to the edge.

Sam is reduced to a mindless chant of 'More, now. Please, Dean. More dammit, now!' before Dean acquiesces and slides in, hard and deep.

"All good things come to those who wait, brother mine."

Sam howls as Dean layers himself, belly to spine, over Sam's back, and begins to move with dark intent. His cock is in almost constant contact with Sam's prostate now and Sam begins to shake apart from over-stimulation.

It only takes a single fingernail, dragged the length of his cock from base to tip, to push Sam over the edge, and he takes Dean with him, twitching muscles pulling aftershocks from both of them, until they collapse in a sated heap.

"See?"

The word is mumbled into the base of Sam's neck, and he's too wiped to react. Dean is persistent.

"I know you can't get enough of me, but you gotta admit that going slow and holding back is hotter than hell!"

Sam gives a full body shrug and repeats it until Dean gets the hint and slides off sideways, coming to rest along Sam's left side. Sam rolls his head to take in Dean's cocky grin.